28 The Management and Diseases of the Dog. 



blood-tinged serum escaped, but no trace of any parasites 

 can be found either in the tubes or parenchyma of the lungs. 

 No ova or young parasites can be found in the blood of the 

 cavities of the heart or of the pulmonary artery. 



"Abdominal viscera appear healthy, though, owing to the 

 obstruction in the lesser circulation, the blood-vessels are 

 engorged. A few ascarides in the intestine and one small 

 taenia elliptica. 



" Case 3. — Dog pup, six months old. 



" In the left lung there are scattered patches of pneumonia 

 in the anterior lobe, one or two are in the middle lobe, and 

 half a dozen, the size of marbles, closely set together in the 

 upper part of posterior lobe. In the right lung the anterior 

 lobe is solid in an area 3 " by i ", extending along the lower 

 free border, and through the whole thickness. Small patches 

 occur here and there over the other lobes. In this instance ' 

 the inflamed spots are smaller, and not so extensive as in the 

 other cases. On slitting up the trachea the mucous mem- 

 brane looks healthy to within' 2" of the bifurcation, when it 

 becomes swollen, dark red in colour, and thickly scattered 

 over with the elevated granular masses noticed in the first 

 case, attached to and in which numerous small white worms 

 can be seen. A stream of water of considerable force does 

 not wash them away, but shows that each little elevation 

 consists of a nest of the parasites. They extend to the tubes 

 of the second order, and are specially abundant at the 

 bifurcation itself, and about the orifices of the first tubes 

 given off from the main bronchi. The small tubes are filled 

 up with a frothy setum. Two of the worms are found far 

 in the mucus. 



" Stomach and intestines appear healthy, except the lower 

 portion of the ileum, which is congested. " 



"In this region ten specimens of dochmiustrigonocephalus 

 occur, and further up in the bowel eight ascarides. 



" Case 4. — A six months old dog pup brought to the in- 

 firmary and died the next day. 



